I went to one about 6 months ago, just for fun. The wife and I viewed it as a few hours of entertainment, akin to going to see a movie.
It was fun watching the hard sell, and we were picking out all the tactics the speaker was using.
They're just selling you on their 3k weekend course.
You might learn a little bit, if you know nothing about real estate. I knew way more than the speaker, and reading the books recommended on this forum will get you what you need.
Probably not worth the time to go, unless you've got nothing but time. Definitely not worth paying anything to go to their weekend one.